Subsequent Events	12 Months Ended
Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	20. Subsequent Events Equity Grants In November 2021, we granted shares valued at approximately $20.5 million to our employees, including our executive officers ($3.1 million), in payment of amounts earned under our annual Corporate Incentive Plan. We also granted service-based restricted stock units (RSUs) valued at approximately $47.0 million to employees, including our executive officers ($11.1 million), and performance-based RSUs valued at approximately $18.2 million to employees, including our executive officers ($11.1 million). The service-based RSUs will generally vest in three substantially equal annual installments on November 15, 2022, 2023 and 2024. Half of the performance-based RSUs are eligible to vest based upon annual cash flow performance measures, measured over a three-year period and will vest in three substantially equal annual installments on November 15, 2022, 2023 and 2024. The other half are relative Total Shareholder Return RSUs which are eligible to vest based on the performance of PTC stock relative to the stock performance of an index of software and services companies for the period ending September 30, 2024 and will vest to the extent earned on November 15, 2024. Restructuring On November 3, 2021, we committed to a plan to restructure our workforce and consolidate select facilities to align our customer facing and product-related functions with SaaS industry best practices and accelerate the opportunity for our on-premise customers to move to the cloud. The expected savings from the restructuring will be re-invested in the business. The restructuring is expected to result in a charge and cash payments of approximately $45 million to $50 million in 2022. We anticipate additional cash restructuring payments of approximately $5 million related to past restructurings.

Subsequent Events

12 Months Ended

Sep. 30, 2021

20. Subsequent Events

Equity Grants

In November 2021, we granted shares valued at approximately $20.5 million to our employees, including our executive officers ($3.1 million), in payment of amounts earned under our annual Corporate Incentive Plan. We also granted service-based restricted stock units (RSUs) valued at approximately $47.0 million to employees, including our executive officers ($11.1 million), and performance-based RSUs valued at approximately $18.2 million to employees, including our executive officers ($11.1 million). The service-based RSUs will generally vest in three substantially equal annual installments on November 15, 2022, 2023 and 2024. Half of the performance-based RSUs are eligible to vest based upon annual cash flow performance measures, measured over a three-year period and will vest in three substantially equal annual installments on November 15, 2022, 2023 and 2024. The other half are relative Total Shareholder Return RSUs which are eligible to vest based on the performance of PTC stock relative to the stock performance of an index of software and services companies for the period ending September 30, 2024 and will vest to the extent earned on November 15, 2024.

Restructuring

On November 3, 2021, we committed to a plan to restructure our workforce and consolidate select facilities to align our customer facing and product-related functions with SaaS industry best practices and accelerate the opportunity for our on-premise customers to move to the cloud. The expected savings from the restructuring will be re-invested in the business. The restructuring is expected to result in a charge and cash payments of approximately $45 million to $50 million in 2022. We anticipate additional cash restructuring payments of approximately $5 million related to past restructurings.